Complete SCAM. Stay away! I ordered a $4.00 book and was completely unaware that I was joining a book club for $19.95 a month until I noticed this charge showing up on my credit card bill. I disputed it. They countered, saying I was aware of what I had done. They even sent me a copy of a "welcome letter" that I had never seen in my life. They also claimed I contacted them to cancel (which I never did since I had no idea I had joined!)... Maybe the dispute got them nervous. NEVER AGAIN!
Be sure to read other reviews as they go by a variety of names. Very tricky.